CVE-2022-50657 (GCVE-0-2022-50657)

Vulnerability from cvelistv5 – Published: 2025-12-09 01:29 – Updated: 2026-05-11 19:23
VLAI
Title
riscv: mm: add missing memcpy in kasan_init
Summary
In the Linux kernel, the following vulnerability has been resolved: riscv: mm: add missing memcpy in kasan_init Hi Atish, It seems that the panic is due to the missing memcpy during kasan_init. Could you please check whether this patch is helpful? When doing kasan_populate, the new allocated base_pud/base_p4d should contain kasan_early_shadow_{pud, p4d}'s content. Add the missing memcpy to avoid page fault when read/write kasan shadow region. Tested on: - qemu with sv57 and CONFIG_KASAN on. - qemu with sv48 and CONFIG_KASAN on.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8fbdccd2b17335e1881a23865e98c63fcc345938 , < ff0f6becf3a6f817838b6f80a2c9cca43dce0576 (git)
Affected: 8fbdccd2b17335e1881a23865e98c63fcc345938 , < 9f2ac64d6ca60db99132e08628ac2899f956a0ec (git)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "arch/riscv/mm/kasan_init.c"
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        }
      ],
      "providerMetadata": {
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    "datePublished": "2025-12-09T01:29:04.968Z",
    "dateReserved": "2025-12-09T01:26:45.989Z",
    "dateUpdated": "2026-05-11T19:23:06.462Z",
    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: mm: add missing memcpy in kasan_init\n\nHi Atish,\n\nIt seems that the panic is due to the missing memcpy during kasan_init.\nCould you please check whether this patch is helpful?\n\nWhen doing kasan_populate, the new allocated base_pud/base_p4d should\ncontain kasan_early_shadow_{pud, p4d}\u0027s content. Add the missing memcpy\nto avoid page fault when read/write kasan shadow region.\n\nTested on:\n - qemu with sv57 and CONFIG_KASAN on.\n - qemu with sv48 and CONFIG_KASAN on."
          }
        ],
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        "metrics": {},
        "published": "2025-12-09T16:17:17.110",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: riscv: mm: add missing memcpy in kasan_init",
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      "title": "SUSE CVE CVE-2022-50657",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50657.json",
      "version": "9"
    }
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}



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